UG-29B/U(40) Coaxial Connector N Jack-Jack Adapter

Part Overview

The UG-29B/U(40) is a coaxial connector adapter manufactured by Hirose Electric Co Ltd, designed for RF applications requiring N-series jack-to-jack connections at 50 ohms impedance. This adapter provides female socket-to-female socket conversion in a straight, free-hanging configuration. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure continued availability and support for existing designs and maintenance requirements.

Substiute Parts

UG-29B/U(40)

Hirose Electric Co LtdIn Stock: 1088UG-29B/U(40) Datasheet

Current PartRFQ

UG-29B/U(45)

Hirose Electric Co LtdIn Stock: 1248UG-29B/U(45) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the UG-29B/U(40) is determined by strict equivalence in the following critical parameters:

• Adapter Series: N to N (same connector series on both ends)
• Adapter Type: Jack to Jack (same gender configuration)
• Center Gender: Female to Female (same internal contact gender)
• Impedance: 50 Ohms (RF characteristic impedance)
• Mounting Type: Free Hanging (In-Line) (same physical mounting configuration)
• Fastening Type: Threaded, Threaded (same connection method)

The UG-29B/U(45) meets all these critical substitution criteria. Variations in secondary parameters such as frequency rating, operating temperature range, plating materials, and body finish do not prevent functional substitution when the primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The UG-29B/U(45) is the direct substitute for the UG-29B/U(40). Both parts share identical electrical and mechanical specifications for the core adapter function: N-series jack-to-jack, female-to-female, 50-ohm impedance in a straight, free-hanging configuration.

The UG-29B/U(45) offers the advantage of Active product status, ensuring continued availability and supply chain support. This part is RoHS Compliant and carries the same ECCN and HTSUS classifications as the original.

Selection between these parts should be based on application requirements:

• If the application operates within the UG-29B/U(45) operating temperature range (-30°C ~ 60°C) and frequency requirements do not exceed 10 GHz, the UG-29B/U(45) is the preferred choice due to its active status and superior availability.
• If the application requires the extended low-temperature capability (-55°C) or operates at frequencies below 6 GHz where the UG-29B/U(40) specification is sufficient, either part is functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can the UG-29B/U(45) directly replace the UG-29B/U(40) in existing designs?

A: Yes. Both adapters are mechanically and electrically identical in their core function: N-series jack-to-jack, female-to-female, 50-ohm impedance connections. The UG-29B/U(45) is the manufacturer-recommended substitute.

Q: What are the differences between these two part numbers?

A: The primary differences are frequency rating (6 GHz vs. 10 GHz), operating temperature range (-55°C ~ 85°C vs. -30°C ~ 60°C), plating materials (silver vs. gold center contact), and body finish (silver vs. nickel). The UG-29B/U(45) also has Active product status compared to Last Time Buy for the UG-29B/U(40).

Q: Are there any compatibility concerns when substituting the UG-29B/U(45) for the UG-29B/U(40)?

A: No compatibility concerns exist for the adapter function itself. Verify that your application's operating temperature range and frequency requirements fall within the UG-29B/U(45) specifications (-30°C ~ 60°C, up to 10 GHz).

Q: What is the packaging configuration for these parts?

A: Both parts are supplied in Bulk packaging.

Q: Are both parts RoHS compliant?

A: Yes. The UG-29B/U(40) is ROHS3 Compliant, and the UG-29B/U(45) is RoHS Compliant. Both meet regulatory requirements for restricted substance compliance.